And that's the same problem human drivers have. Over time, AV's have been getting better at it than humans. Waymo's 600+ vehicle fleet is averaging about 25,000 miles per DAY on public highways, and is doing it with a much better safety record than humans driving comparable miles. Waymo vehicles logged 1.2 million miles last year in California alone, and that's not even their primary testing state. For the CA miles, the vehicles averaged 0.09 disconnects per 1,000 miles where a human took control. That's half the rate they logged the previous year, so apparently there's plenty of learning going on.